Introduction
Merchant API docs for CoinPay — accept USDC/USDT with invoices and webhooks.
CoinPay is a stablecoin payment gateway. Merchants create invoices, send customers to hosted checkout, and receive signed webhooks when payment status changes.
What you will integrate
Phase 1 public API (API key) covers:
- Create, list, and get invoices
- Poll invoice status
whoamifor key context- Test vs live API keys
Configure webhook URL and secret in the merchant dashboard. Verify webhook signatures in your backend — see Webhooks.
Dashboard features (withdrawals, disbursements, money overview) are managed in the merchant app — not required for a basic gateway integration.